Official WP7.8 update on AT&T Nokia Lumia 900 – Quick Video Preview

The Windows Phone 7.8 update for the AT&T Nokia Lumia 900 recently popped up on Navifirm and lucky folks over at WPCentral managed to download and flash it on Lumia 900. Well, checkout their quick video preview of WP7.8 update to find what’s new in it for AT&T Nokia Lumia 900.